I see that this questions is marked as resolved, but -- I'll write my answer just in case someone else will search for it in future.
Вивчати -- is a transitive verb. It is used with "object": i.e. what you learn. Я вивчаю англійську (I learn English).
Вчитися -- is a intransitive verb. It is used without "object". Я вчуся в інституті (I study at the institute); but: я _вивчаю_ право в інституті (I learn law at the institute).
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There is also another (intransitive) verb навчатися, which is synonymous/interchangeable with вчитися.